Nanoporous Aluminum Oxide as a Thermoluminescent Sensor for Ionization Radiation

In this work we investigated the thermoluminescence proprieties of nanopourous aluminum oxide strips produced by anodic oxidation of aluminum in several solvents in order to obtain a suitable dosemeter for radiation dose measurements. The photoluminescence and infrared characterization were performed at room temperature using a Jobin Yvon Ramanor model U-1000 spectrometer using either a 150 W Xe Lamp or a argon laser as a excitation source. The dosimetric proprieties of the nanopourous aluminum oxide strips were studied in order to determine their usefulness as thermoluminescent dosemeters. The samples were tested in X radiation beams and evaluated in relation to their main dosimetric charcteristics, as TL glow curves, calibration curves and energy dependence. The TL readouts were performed with a 2800M Victoreen reader under a linear heating rate of 8C/s up to 320C and all samples were annealed for 1h at 400C before each irradiation. The results showed a linear TL response with the dose in the range from 100mGy to 1100mGy.